Description
Here is the organized product description for the TES1-12706 / TEC1-12706 Oversized (5x5cm) Thermoelectric Peltier Cooler Module.
Product Overview
The TES1-12706 (commonly cross-referenced as TEC1-12706) is famously known as the absolute industry standard for DIY and hobbyist thermoelectric cooling. While the conventional 12706 features a 4x4cm footprint, this specialized 50mm x 50mm (5x5cm) variant expands the surface area while maintaining the signature 127 internal semiconductor couples and highly efficient 6A configuration.
By spreading the cooling and heating power over a larger 5x5cm ceramic surface, this module reduces concentrated thermal density. This makes it significantly easier to manage with larger heatsinks and prevents localized “hot spots,” resulting in more uniform temperature regulation across wider surface areas.
Technical Specifications
| Parameter | Specification |
| Model | TES1-12706 / TEC1-12706 (Large Format) |
| Dimensions | $50\text{mm} \times 50\text{mm} \times 3.8\text{mm}$ to $4.0\text{mm}$ |
| Couples (P-N Junctions) | 127 |
| Max Current ($I_{max}$) | 6.0A |
| Max Voltage ($V_{max}$) | ~15.4V DC (Optimized for standard 12V DC operation) |
| Max Cooling Power ($Q_{max}$) | ~52W to 62.5W ($\Delta T = 0^\circ\text{C}$) |
| Max Temperature Difference ($\Delta T_{max}$) | $\ge 66^\circ\text{C}$ to $68^\circ\text{C}$ |
| Internal Resistance | ~2.0Ω to 2.3Ω |
| Wire Lead Length | ~150mm to 300mm |
Key Features
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Expanded 5x5cm Surface Area: Offers a broader contact zone, making it highly effective for cooling wider objects (like large laboratory flasks, specialized electronic plates, or wide-base liquid blocks) without losing thermal efficiency on overlapping edges.
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Lower Thermal Density: Spreading 60W of maximum cooling power over a larger footprint allows the module to shed heat more evenly, preventing the rapid heat-backflow often seen in smaller, tightly packed modules.
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The Universal 12V Standard: Purpose-built to run optimally on 12V DC power systems, making it perfectly compatible with desktop computer power supplies (PSUs), 12V batteries, and standard automotive power adapters.
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Fully Reversible Operation: Effortlessly switches from chilling to heating by reversing the DC current polarity, providing a responsive and highly accurate climate control solution.
Common Applications
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Laboratory & Scientific Instruments: Widely used in laboratory refrigeration equipment, medical testing diagnostics, and sample preservation stages where gentle, distributed thermal regulation is necessary.
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Large-Scale DIY Refrigeration: Perfect for custom or replacement builds of large 12V portable camping coolers, iceless food chests, and wide-chassis wine refrigerators.
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Industrial Enclosure Cooling: Integrated into industrial electrical cabinets to cool sensitive electronic controllers and prevent heat-related component failures.
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Custom Liquid & Component Chillers: Excellent for pairing with oversized 50mm water blocks or multi-fan heatsinks to build high-efficiency custom liquid cooling setups.
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